Improvement in carriage-jack



admired eer W www i HENRY L. HAMMOND, 0F PRGVIDENCE, RHDE ISLAND.

Letters Patent No. 83,773, dated, November 3, 1868.

IMPROVEMENT IN CARRIAGE-JACK.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern;

Be it lmown that I HENRY L. HAMMOND, of the city of Providence, in t ze State of Rhode Island, have invented new and useful Improvements' in Carriage- Jacks and I do hereby declare the following to be a fulland exact description of the same, reference being had to the drawings that accompany and form a part of this speeioation, in which- Figure I is a view of the machine in perspective.

Figure II, a sectional view.

Letter A, main standard. Y

Letter B, base to support the 'standard A.

Letters O O', two plates to slide up and down in the slot D.

Figures l, 2, 3, and 4, anges on the plates C and C',

'-to guide them in their movements up and down.

E, a lever lying transvei sely between the plates OG', and extending somewhat on either side, as seen in Fig.

F, working-lever.

G, a stirrup, arranged-as seen in Fig. II, and forming a toggle-joint upon the end of the lever E, and a ,projection on the Workinglever, as shown.

H, a pin to' be placed in any one of the openings shown in the standard A, to support the plates -O C', and the levez' at any elevation desired.

The object of my invention is to provide a light, strong, compact, and durable carriage-jack, and vone that can be easily manipulated, and be readily adapted to all sizes of wheels. The plates G O andthe levers E, F, and G, should be niade'of iron, While the stand-k ard B may be of Wood.

The pin H should be three-fourths to seven-eighths 'of an inch in diameter, as the lWhole Weight raised bears upon it.

What I claim as my invention, and desire to secure by Letters Patent, is-' The flange-plates C and C', in combination with the levers E and F, and the standard A, substantially as described, and for the purposes set forth.

HENRY L. HAIMMOND.

Witnesses:

ISA-Ao PITMAN, JOSHUA F. HAMMOND. 

